Answers: 3
Mathematics, 22.06.2019 02:30, arrichardson787
Aresearch study is studying the effects of a new drug for osteoporosis alzheimer's disease (ad) for women above the age of 65 years. a group of individuals with osteoporosis is randomized into two groups. one group is treated conventionally, and the second group is treated with the new medication. assessments are made at 3, 6, 12, 36, and 48 months. the conventionally treated group is assessed for ad using a serum blood test, and the treatment group is assessed for ad using a pet radiotracer that binds to beta-amyloid plaques. in comparing these 2 trial arms, the authors of the study may encounter which type of bias? a. selection bias on the risk of developing b. measurement bias c. confounding bias d. recall bias e. lead-time bias
Answers: 2
Mathematics, 22.06.2019 07:30, YuliaTyson6080
Determine whether the described scatter plot is possible. sketch a graph of the scatter plot if you believe it is possible. give an explanation if it is not possible (a) can a scatter plot show a nonlinear and a positive association? (b) can a scatter plot show a nonlinear and a negative association? (c) can a scatter plot show a linear association but neither a positive nor a negative association!
Answers: 1
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